Impedance techniques kinetic parameters from measurements

Ac voltammetry is one of the techniques based on the analysis of faradaic impedance. A low-amplitude sinusoidal voltage (E ) is applied to the working electrode, which is also biased at some dc potential (E ) with respect to the reference electrode. Because of the difference in the time scale, the ac component of the total current can be readily separated from the dc component. The kinetic parameters can be extracted either from the amplitude of ac current, which is measured as a function of E, or from the phase angle between the ac current and ac voltage, [Pg.645]

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